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Detailed Description of VII/147
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Individual files can be fetched (via http) from
here
or via ftp from: ftp://cdsarc.u-strasbg.fr/pub/cats/VII/147
The catalogue can be queried from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VII/147
This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.
VII/147 Photometric Catalog of Northern Bright Galaxies (Kodaira+ 1992)
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Photometric Catalog of Northern Bright Galaxies
Kodaira K., Okamura S., Ichikawa S., Hamabe M., Watanabe M.
<National Astron. Obs. of Japan (1992)>
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ADC_Keywords: Galaxy catalogs ; Magnitudes
Description:
This catalog presents homogeneous photometric parameters of 791
northern bright galaxies based on surface photometry. The observations
were made with the 105 Schmidt telescope at Kiso Observatory in the
photographic V band, mostly during 1984-1988. This catalog is the
first machine-readable version of Part II of the "Photometric Atlas of
Northern Bright Galaxies" (Kodaira et al. 1990). The fields in the
catalog include galaxy name, position (B1950), morphological type,
radial velocity, galactic V-band absorption, effective radius,
apparent magnitude, and parameters of the ellipse fitted to the
photometric galaxy image.
Abstract :
Galaxies are the most massive, luminous astronomical objects bound by
self gravity and comprise the major fraction of luminous mass in the
universe. Recent investigations of galaxies often require statistical
analysis of a large body of observational data. High degree of
homogeneity of the data is the key point to the success of such
investigations.
This catalog presents homogeneous photometric parameters of 791
northern bright galaxies on the basis of modern photographic surface
photometry. Sample galaxies are taken from the Revised Shapley-Ames
Catalog of Bright Galaxies (Sandage and Tammann 1981) and most of them
are members of the Local Super-cluster.
Observations were made with the 105cm Schmidt telescope at the Kiso
Observatory, Institute of Astronomy, University of Tokyo, in the
photographic V band (Kodak IIa-D emulsion combined with a Schott GG
495 filter) mostly during 1984-1988. Sample galaxies photographed on a
total of 280 Schmidt plates were scanned with the PDS 2020 GMS
microdensitometer at the Kiso Observatory during April-August 1988.
Data reduction for standard surface photometry was carried out using a
software library SPIRAL (Ichikawa et al. 1987; Okamura 1988) during
July-September 1988. The intensive plate measurement and data
reduction secure high homogeneity of the present data.
This catalog is the first machine-readable version (Ver.1) of Part II
(The Catalog) of the 'Photometric Atlas of Northern Bright Galaxies'
(Kodaira et al. 1990), which also includes in Part III illustrative
information such as images, isophotal maps, luminosity profiles, and
ellipses fitted to the isophotes. Image data of sample galaxies can be
obtained in FITS format magnetic tapes upon request, and it is planned
to distribute them on CD-ROMs.
We request that those errors in this catalog that are found by the
user be transmitted to S. Ichikawa, National Astronomical Observatory,
Mitaka, Tokyo 181 Japan (e-mail : ) so that
they can be corrected in future versions.
File Summary:
FileName Lrecl Records Explanations
× ReadMe 80 . This file
× data.dat 118 791 The Catalog of Northern Bright Galaxies
× notes.dat 72 72 Notes on peculiar objects
See also:
VII/51 : Revised Shapley-Ames Catalog of Bright Galaxies (Sandage+, 1981)
(RSA)
VII/112 : RC2 Catalogue (de Vaucouleurs+ 1976)
Byte-by-byte Description of file: data.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Name The galaxy name taken from RSA (VII/51)
9- 10 I2 h RAh Hours of right ascension taken from RSA (VII/51)
(Equinox 1950.0).
11- 12 I2 min RAm Minutes of R.A. (B1950)
13- 14 I2 s RAs Seconds of R.A. (B1950)
16 A1 --- DE- Declination sign taken from RSA (VII/51)
(Equinox 1950.0).
17- 18 I2 deg DEd Degrees of declination (B1950)
19- 22 F4.1 arcmin DEm Minutes of declination (B1950)
24- 37 A14 --- MType Morphological type taken from RC2 and decoded
by the authors.
39- 40 I2 --- TType Morphological type index from RC2 (VII/112)
41 A1 --- u_TType [:?] uncertainty/peculiarity code for TType
42- 45 I4 km/s RVlg Radial velocity relative to the centroid of the
Local Group taken from RSA (VII/51)
47- 50 F4.2 mag Av Galactic absorption in the V band calculated
as AV = 0.75 AB, using the AB tabulated
in Burstein and Heiles (1984ApJS...54...33B)
51 A1 --- n_Av Code for galactic absorption as in
Burstein and Heiles (1984ApJS...54...33B).
53- 57 F5.2 mag Vmag Total apparent (asymptotic) magnitude in the
V band derived in the growth curve fitting;
estimated 1-sigma internal accuracy 0.10 mag.
59- 62 F4.2 [arcsec] Reff Logarithm of the effective radius derived in
the growth curve fitting;
estimated internal accuracy 0.03.
63 A1 --- u_Reff Code for the effective radius (a colon shows
values smaller than Re = 15 arcsec).
64- 65 A2 --- Gcurve Category of growth curve template used (2)
67- 71 F5.2 mag Vmag25 Apparent magnitude integrated in the
25mag/arcsec2 isophote (3)
73- 76 F4.2 [arcsec] a Logarithm of semi-major axis of the envelope
ellipse; estimated internal accuracy 0.03.
78- 81 F4.2 --- b/a Axis ratio of the envelope ellipse;
estimated internal accuracy 0.04.
83- 85 I3 deg ePA Angle of the envelope ellipse (1)
87- 90 F4.1 deg fPA Position angle of the frame (1)
92- 96 F5.2 mag/arcsec2 mu Effective surface brightness (5)
97 A1 --- u_mu Uncertainty code for mu (5)
98-101 F4.2 [arcsec] Aeff Logarithm of the semi-major axis of
effective ellipse (5)
102 A1 --- u_Aeff Uncertainty code for Aeff (5)
103-106 F4.2 --- B/A The axis ratio of the effective ellipse; the
estimated internal accuracy is 0.03.
108-111 F4.2 --- c1 The luminosity concentration index 1/4,3/4 (4)
112 A1 --- u_c1 Uncertainty code for c1 (4)
113-116 F4.2 --- c2 The luminosity concentration index 1/2,3/4 (4)
117 A1 --- u_c2 Uncertainty code for c2 (4)
118 A1 --- Note [N] indicates that a note is given on the galaxy
at the end of the catalog (Kodaira et al. 1990).
Note (1): The position angle is measured counter-clockwise from upward
direction with respect to the frame; estimated internal accuracy
is 4.5 degrees. ePA refers to the frame measured with the PDS
microdensitometer, and fPA is the angle between North and the upward
direction of the frame was given in column (5) of Table 4.2 in Kodaira
et al. (1990), separately from the main catalog. The true position
angle can be computed as the sum of the ePA and fPA angles.
Note (2):
The type category of the template of the growth curve used in the
derivation of the apparent total magnitude and the effective radius
given in the preceding two columns. The type category is indicated
only when the template of a different category from that to which the
galaxy belongs was used.
Note (3): Vmag25 is the magnitude in the V band integrated within the
envelope ellipse, i.e., the ellipse fitted to the isophote of 25
mag/arcsec2 (see section 1.7 of Kodaira et al. 1990 for detail).
Estimated internal accuracy is 0.10 mag.
Note (4):
c1 is the computed as the ratio of (a*b)(1/2) of the ellipses that
encircle 1/4 and 3/4 of the total luminosity, as explained in section
1.7 of Kodaira et al. (1990), and has an estimated internal accuracy
of 0.01; c2 is computed as the ratio of (a*b)**(1/2) of the ellipses
that encircles 1/2 and 3/4 of the total luminosity, and has an
estimated internal accuracy of 0.03.
A colon in u_c1 indicates that (a1*b1)(1/2) is smaller than
15arcsec, where a1 and b1 are the semi-major and semi-minor axes
of the ellipse that encircles 1/4 of the total luminosity; a colon in
u_c2 indicates that (ae*be)**(1/2) is smaller than 15 arcsec,
where ae and be are the semi-major and semi-minor axes of the
effective ellipse.
Note (5):
The effective ellipse encircles half of the total luminosity; the
estimated internal accuracy of mu is 0.19mag, and the estimated
internal accuracy of Aeff is 0.04[arcsec]. A colon in u_mu shows
values smaller than 19.5, and a colon in u_Aeff indicates a
semi-major axis smaller than 15arcsec.
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Name The galaxy name taken from RSA.
8 A1 --- --- [:]
9- 72 A64 --- Text Text of note
Acknowledgements:
The generation of machine-readable files and the data validation are
carried out by the Astronomical Data Analysis Center of the National
Astronomical Observatory, Japan, under the collaboration with the
authors.
Authors' addresses:
K. Kodaira, National Astronomical Observatory, Mitaka, Tokyo, 181 Japan,
S. Okamura, Department of Astronomy, University of Tokyo,
Bunkyo-ku, Tokyo, 113 Japan,
S. Ichikawa, National Astronomical Observatory, Mitaka, Tokyo, 181 Japan,
M. Hamabe, Kiso Observatory, Institute of Astronomy, University of Tokyo,
Mitake-mura, Kiso-gun, Nagano-ken, 397-01 Japan,
M. Watanabe, AdIn Research Institute,
1-5-8, Jin-nan, Shibuya-ku, Tokyo, 150 Japan.
History:
* 01-Apr-1992: Catalog kindly supplied by Shiro Nishimura (Astronomical
Data Center of Japan) to CDS.
* 17-Jul-2004: Documentation standardized at CDS
References :
Burstein, D. and Heiles, C. 1984, Astrophys. J. Suppl., 54, 33.
(1984ApJS...54...33B)
de Vaucouleurs, G., de Vaucouleurs, A. and Corwin, H. G. Jr. 1976, Second
Reference Catalogue of Bright Galaxies (Austin: Univ. Texas Press ) (RC2)
(Cat. VII/112)
Ichikawa, S., Okamura, S., Watanabe, M., Hamabe, M., Aoki, T. and Kodaira, K.
1987, Ann. Tokyo Astr. Obs., 2nd Ser., 21, 285. (1987AnTok..21..285I)
Kodaira, K., Okamura, S., Ichikawa, S., Hamabe, M. and Watanabe, M. 1990,
Photometric Atlas of Northern Bright Galaxies (Tokyo: Univ. Tokyo Press).
Okamura, S. 1988, Publ. Astr. Soc. Pacific, 100, 524 (1988PASP..100..524O)
Sandage, A. and Tammann, G. A. 1981, A Revised Shapley-Ames Catalog of Bright
Galaxies (Washington: Carnegie Inst. of Washington) (RSA).
(Cat. VII/51)
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(End) 01-Apr-1992
